The Linux Electronic Mail Administrator HOWTO The Linux Electronic Mail Administrator HOWTO Table of Contents The Linux Electronic Mail Administrator HOWTO......................................................................................1 Guylhem Aznar <guylhem at metalab.unc.edu>.....................................................................................1 1.Introduction, copyright and standard disclaimer..................................................................................1 2.Other sources of information................................................................................................................1 3.How Electronic Mail Works.................................................................................................................1 4.Requirements........................................................................................................................................2 5.Choosing a Mail Transport Agent.........................................................................................................2 6.Installing Transport Software...............................................................................................................2 7.User Agent Administration ..................................................................................................................2 8.Handling remote mail...........................................................................................................................2 9.Acknowledgements...............................................................................................................................2 1.Introduction, copyright and standard disclaimer..................................................................................3 1.1 Email and spamming ........................................................................................................................3 1.2 Goals .................................................................................................................................................3 1.3 New versions .....................................................................................................................................3 1.4 Feedback ...........................................................................................................................................3 1.5 Copyright ..........................................................................................................................................4 1.6 Limited warranty ...............................................................................................................................4 2..................................................................................................................................................................4Other sources of information................................................................................................................4 2.2 USENET ...........................................................................................................................................4 2.3 Mailing Lists .....................................................................................................................................5 2.4 Other documents from LDP ..............................................................................................................5 2.5 Books ................................................................................................................................................5 3.How Electronic Mail Works.................................................................................................................6 3.1 Mail between full−time Internet machines........................................................................................6 3.2 Notifiers.............................................................................................................................................8 3.3 Mail to part−time Internet machines..................................................................................................9 3.4 Remote mail and remote−mail protocols...........................................................................................9 3.5 Mailbox formats...............................................................................................................................11 4.Requirements......................................................................................................................................12 4.1 Hardware .........................................................................................................................................12 5.Choosing a Mail Transport Agent.......................................................................................................12 5.1 sendmail...........................................................................................................................................13 5.2 smail v3.2.........................................................................................................................................13 5.3 qmail................................................................................................................................................14 5.4 exim.................................................................................................................................................14 6.Installing Transport Software.............................................................................................................14 6.1 Qmail v1.03.....................................................................................................................................14 Getting qmail ...........................................................................................................................14 Uncompressing sources ...........................................................................................................15 Preparing for compilation ........................................................................................................15 Configuring qmail ....................................................................................................................18 defaultdomain, me, plusdomain ...............................................................................................18 locals, rcpthosts ........................................................................................................................18 virtualdomains .........................................................................................................................18 Testing qmail ...........................................................................................................................19 Removing your other MTA .....................................................................................................19 i The Linux Electronic Mail Administrator HOWTO Table of Contents That's all, folks! .......................................................................................................................22 6.2 Smail v3.1........................................................................................................................................22 Configuring smail ....................................................................................................................22 "config" file ..............................................................................................................................22 "directors" file ..........................................................................................................................23 "fidopaths" file .........................................................................................................................26 "routers" file .............................................................................................................................26 "transports" file ........................................................................................................................27 "maps/" directory .....................................................................................................................30 Other good examples ...............................................................................................................30 Restarting inetd ........................................................................................................................33 Smail with smtp .......................................................................................................................33 6.3 OUTDATED SECTION: Sendmail+IDA.......................................................................................34 Source installation ....................................................................................................................34 The sendmail.m4 file ...............................................................................................................35 Defining a local mailer.............................................................................................................36 The sendmail+IDA dbm tables ................................................................................................37 So which entries are really required?........................................................................................37 6.4 Sendmail